I have a new Whirlpool-made Sears Kenmore 80 series direct drive washer (non-Calypso) with a mechanical timer. This and older belt-drive Whirlpools are designed to pause for several seconds just after the wash cycle has ended and just before the rinse cycle begins and also pause another several seconds between the end of the rinse cycle and the start of the spin cycle.
However, with this washer if the lid is opened during either pause, the timer will buzz and occasionally whir and make popcorn-like noises (gears clashing)?. The noises disappear immediately when the lid is closed and resume when it's opened again. The buzzing is not the normal timer motor noise, which is much quieter. I'm mostly concerned about the irregular nature of noises
A Sears technician (real technician) told me, over the phone, that these noises are normal for this model and that they're caused by the "AC-to-DC transducer" shutting off current to the rest of the circuit and the power having nowhere else to go. He also said the device could burn out if left in this condition too long.
I'm fairly sure he did not mean "transformer," although he did make a comparison to a model train set, which would imply a transformer, but this noise isn't like anything I've heard from any 60 Hz transformer or coil. And why would it be an AC-to-DC device? I thought Whirlpool washers with mechanical timers used only AC internally and never converted anything to DC.
What are these noises, and are they really normal?